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GiveUsers

by Jerry (Scribe)
on Aug 19, 2001 at 07:01 UTC ( #105967=sourcecode: print w/ replies, xml ) Need Help??

Category: code
Author/Contact Info Jerry Fowler - jerry@digilliance.net
Description: Serves GPG encrypted versions of /etc/passwd and /etc/shadow for syncing of user accounts across multiple linux systems. Sorry about the tabs... I'll do better next time ;o)
#!/usr/bin/perl

use IO::Socket;
use File::Copy;
$sock=new IO::Socket::INET      (LocalHost => '222.22.222.22',
                                LocalPort => '60009',
                                Proto => 'tcp',
                                Listen => 2,
                                Reuse => 1
                                );
die "Socket could not be created! Reason: $!" unless $sock;
while ($new_sock = $sock->accept()) {
        copy("/etc/passwd","/tmp/giveusers/passwd");
        copy("/etc/shadow","/tmp/giveusers/shadow");
        system('gpg -e -r jerry2 -a /tmp/giveusers/passwd');
        system('gpg -e -r jerry2 -a /tmp/giveusers/shadow');
        unlink '/tmp/giveusers/passwd';
        unlink '/tmp/giveusers/shadow';

        $hersockaddr    = getpeername($new_sock);
        ($port, $iaddr) = unpack_sockaddr_in($hersockaddr);
        $herhostname    = gethostbyaddr($iaddr, AF_INET);
        $herstraddr     = inet_ntoa($iaddr);
        $date=`date`;
        open(LOG, ">>" . "/var/adm/getusers");
        print LOG "Connection from: $herhostname [$herstraddr] at $dat
+e\n";
        close(LOG);
        if (($herstraddr eq '22.22.22.22') || ($herstraddr eq '22.22.2
+2.21')) {
                open(PASSWD, "<" . "/tmp/giveusers/passwd.asc");
                while (<PASSWD>) {
                        chomp;
#                        @line=split(/:/);
#                        $cleaned="$line[0]:x:$line[2]:$line[3]::/tmp:
+/bin/false";
#                        print $new_sock "$cleaned\n";
                        print $new_sock "$_\n";
                }
                close(PASSWD);
                print $new_sock "---DELIMITER---\n";
                open(SHADOW, "<" . "/tmp/giveusers/shadow.asc");
                while (<SHADOW>) {
                        chomp;
                        print $new_sock "$_\n";
                }
                close(SHADOW);
                unlink '/tmp/giveusers/passwd.asc';
                unlink '/tmp/giveusers/shadow.asc';
        } else {
                print $new_sock "Unauthorized access from $herstraddr 
+LOGGED!!\n";
                die "$herstraddr";
        }
        close($new_sock);
}

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